Central heating 15mm

[Jamespf1]

Hi all,

I’ve just purchased my new home and all the heating system is in 15mm no 22mm. The heating works with no problems and boiler is 5 years old. 9 rads in total.

Should I look into changing some of the 15mm to 22mm or don’t fix something if it isn’t broken?
What can I expect to happen if I don’t change the pipe? The pump in the boiler to go?

Thanks

 

[ktuludays]

Thousands of heating systems run on 15mm copper with no issues at all for years.

What makes you think you need 22mm

 

[muggles]

Absolutely nothing wrong with smaller systems like yours being in all 15mm. In fact, it can be advantageous as it induces a higher water velocity reduces the chances of dirt blocking your paperwork

 

[gas112]

What makes you think you have no 22mm does it come off the boiler in 15mm.